清空筛选条件
清空筛选条件

How to read all mat files in folder and save plot as image

3 次查看（过去 30 天）
Med Future
Med Future 2022-6-2
回答： Image Analyst 2022-6-2
Hello everyone, i hope you are doing well. i have the following 100 .mat files in folders.
i want to save the plot of all .mat files as image.
I have implement the following code for single mat file
S = load('C:\Users\DELL\Documents\MATLAB\Examples\R2021b\deeplearning_shared\ModulationClassificationWithDeepLearningExample\Dataset1\frame8PSK001.mat');
plot(real(S.frame))
set(gca,'visible','off')
  2 个评论
Med Future
Med Future 2022-6-2
@Stephen23 i want to read all mat files from folder then plot real of the mat file and saves the plot as images as i done for one file in above code

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Mathieu NOE
Mathieu NOE 2022-6-2
hello
you can try / build your solution based on this example
here I wanted all data being in one single plot so I concatenated all the files data in one output array. You can of course avoid this step and plot individually each file and save it
fileDir = pwd; % this directory
fileNames = dir(fullfile(fileDir,'frame*.mat')); % get list of data files in directory
fileNames_sorted = natsortfiles({fileNames.name}); % sort file names into natural order
% (download FEX : https://fr.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort)
M= length (fileNames_sorted);
time1 = [];
signal1 = [];
for f = 1:M
S = load(fullfile(fileDir, fileNames_sorted{f}))
% contatenation of all individual files data
time1 = [time1; S.ScopeData1.time];
signal1 = [signal1; S.ScopeData1.signals.values];
end
figure
plot(time1,signal1,'*-')
% save plot
print('MySavedPlot','-dpng')

更多回答（1 个）

Image Analyst
Image Analyst 2022-6-2
To save the plot you can use exportgraphics:
fileName = fullfile(folder, 'frame8PSK001.png');
exportgraphics(gca, fileName);

类别

在 Help Center 和 File Exchange 中查找有关 Printing and Saving 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by